Auto-dissemination of commercially available fungal pathogens in a laboratory assay for management of the brown dog tick Rhipicephalus sanguineus.

Tytuł:: Auto-dissemination of commercially available fungal pathogens in a laboratory assay for management of the brown dog tick Rhipicephalus sanguineus.
Autorzy:: Weeks ENI; Entomology and Nematology Department, University of Florida, Gainesville, FL, U.S.A.
Allan SA; USDA-ARS, Center for Medical, Agricultural and Veterinary Entomology, Gainesville, FL, U.S.A.
Gezan SA; School of Forest Resources and Conservation, University of Florida, Gainesville, FL, U.S.A.
Kaufman PE; Entomology and Nematology Department, University of Florida, Gainesville, FL, U.S.A.
Źródło:: Medical and veterinary entomology [Med Vet Entomol] 2020 Jun; Vol. 34 (2), pp. 184-191. Date of Electronic Publication: 2019 Dec 26.
Typ publikacji:: Journal Article; Research Support, U.S. Gov't, Non-P.H.S.
Język:: English
Imprint Name(s):: Original Publication: Oxford ; Boston : Published for the Royal Entomological Society of London by Blackwell Scientific Publications, [c1987-
MeSH Terms:: Pest Control, Biological*
Tick Control*
Beauveria/*physiology
Metarhizium/*physiology
Rhipicephalus sanguineus/*microbiology
Animals ; Nymph/growth & development ; Nymph/microbiology ; Rhipicephalus sanguineus/growth & development
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Contributed Indexing:: Keywords: Beauveria bassiana; Metarhizium anisopliae; conidia; conspecifics; integrated pest management
Entry Date(s):: Date Created: 20191227 Date Completed: 20201103 Latest Revision: 20220924
Update Code:: 20240105
DOI:: 10.1111/mve.12426
PMID:: 31876331
: Czasopismo naukowe

Pełny tekst

Rhipicephalus sanguineus is a canine tick that infests dogs throughout the world and is frequently found in homes and dog kennels. Management of this tick species is complicated by the presence of resistance to commonly utilized acaricides. Fungal formulations could provide a valuable alternative tool for management and are especially relevant indoors where detrimental environmental effects on fungal spores are of less concern. Two commercially available fungal formulations, one containing Metarhizium anisopliae and the other containing Beauveria bassiana, were compared for time to death and sporulation in nymphal ticks exposed for 60 min in treated filter paper packets. Beauveria bassiana exposure killed ticks faster than M. anisopliae exposure and B. bassiana was more likely to sporulate on tick cadavers than M. anisopliae. To determine whether infected ticks could disseminate fungus to their conspecifics, ticks were marked and treated with fungus before being placed with untreated ticks. Fungus was successfully transmitted from treated to untreated ticks. Mortality of ticks exposed to B. bassiana-exposed conspecifics occurred sooner than for those exposed to M. anisopliae-exposed conspecifics, indicating faster dissemination in the former. Therefore, although both formulations resulted in decreased longevity of ticks compared with the controls, the B. bassiana formulation holds the most promise for direct or indirect application with respect to brown dog tick management.
(© 2019 The Royal Entomological Society.)

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